OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application( [8 ~5 H, }. j6 v- u. Z+ r
/*
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* edma_test.c
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* brief EDMA3 Test Application5 K: h) t; `5 ~- F3 i) _/ |
*
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* This file contains EDMA3 Test code.( f m2 R- p/ I& ~& k2 M
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, \/ t) M: e( g6 F3 p; v, g/ k! z! u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. m$ D. [, F# x! v" x B& n
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 l* v6 h7 Y! ~) G( N- X3 S5 y. p
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* This program is free software; you can redistribute it and/or5 a$ @3 j$ I* _7 X* V4 N/ H
* modify it under the terms of the GNU General Public License as" @" i- g* D5 { R
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 g8 j) K2 h3 e3 G9 v& [* ?
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 h8 ~6 t2 ?# j9 `3 [& `, U7 r
* GNU General Public License for more details.. |0 M! ^2 V) |3 P0 Y- P
*/
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#include <linux/module.h>6 f3 j F+ L$ f$ Z! T5 a
#include <linux/init.h>, Q1 N# W7 [) b! M3 I! l
#include <linux/errno.h>+ k& L0 W% |+ c) M" z! r( N
#include <linux/types.h>
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#include <linux/interrupt.h>9 W) X' f, r. D/ d* w
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>+ v& O" F9 H* Q2 a) E& k
#include <linux/dma-mapping.h>/ r0 k; f1 O$ ? J5 i
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#include <mach/memory.h>
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#include <mach/hardware.h>+ u9 v) ^! \1 |) P
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>, D/ V0 k: m: }& v. A! ^ T* C
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG a- |2 v; \* J/ G: K
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)3 s- B9 h% E5 v2 @& @
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN! a# r5 G; [/ A+ p0 b: Q
#define DMA_FN_OUT
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#endif, B/ z0 d( |. X: u- E5 B1 n
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 P) m$ G9 o) i, g7 @: c
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20& x' ?& o! b" f# N& c m0 n
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23, D* G: X& c- v# \$ B% U! k
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static volatile int irqraised1 = 0;; u6 ^ ?- }" r0 _9 p
static volatile int irqraised2 = 0;& _, g1 ~+ q" \/ O! v
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 Z4 _( v D" j
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;( U) q' w- z1 H9 g5 m
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char *dmabufsrc1 = NULL;3 p3 ]1 v. F: ^. F- a
char *dmabufsrc2 = NULL;9 c% {. r) ?; w( S. l
char *dmabufdest1 = NULL;' Q0 O0 i" E! ~( d2 w
char *dmabufdest2 = NULL;" b7 D4 L5 Z0 Y! s' g4 e- J
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;8 [' g1 C' k1 j
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module_param(acnt, int, S_IRUGO);2 {+ j' V% T( W% c
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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